Energy recovery and reutilization device for large-scale catering flue gas

Abstract

The utility model discloses an energy recovery and reutilization device for large-scale catering flue gas, which comprises a flue gas power generation device and a heat energy storage system, the flue gas power generation device comprises an air bellow butted with a flue, the air bellow consists of an air inlet cone air duct, a straight air duct and an air outlet cone air duct, an impeller is arranged in the straight air duct, and the heat energy storage system is arranged in the straight air duct. The heat energy storage system comprises an energy storage water tank and a smoke exhaust pipe, water is stored in the energy storage water tank, the smoke exhaust pipe penetrates through the energy storage water tank and is immersed in the water, one end of the smoke exhaust pipe is communicated with the air outlet cone air cylinder, and a heat conducting piece is connected to the smoke exhaust pipe. The energy recovery and reutilization device for large-scale catering smoke not only solves the problem of pollution of catering oil smoke, but also solves the problem of comprehensive utilization of catering oil smoke energy.

Description

Technical Field

[0001] The utility model relates to the field of building smoke exhaust equipment, in particular to an energy recovery and reuse device for large-scale restaurant smoke. Background Art

[0002] At present, the research on flue gas treatment in industrial applications is relatively mature, but there is less research on the recovery and utilization of waste heat from catering flue gas. In the production and life of residents, kitchen cooking requires heat as energy, and the generation and utilization of heat energy is often accompanied by the generation of a large amount of waste heat. If this waste heat is not recycled, it will not only waste precious energy resources, but also cause environmental pollution. Therefore, how to efficiently utilize waste heat and solve the pollution and utilization of catering fume emissions is an issue that we urgently need to solve. Summary of the invention

[0003] In view of the above problems in the prior art, the utility model provides an energy recovery and reuse device for large-scale restaurant smoke, which not only solves the restaurant oil fume pollution, but also solves the problem of comprehensive utilization of restaurant oil fume energy.

[0004] The technical solution adopted by the utility model is as follows: an energy recovery and reuse device for large-scale restaurant smoke, including a smoke power generation device and a thermal energy storage system;

[0005] The flue gas power generation device comprises a wind box, the wind box comprises an air inlet cone wind tube docked with the flue and having a contracted cross-sectional area along the wind outlet direction, a straight wind tube docked with the air inlet cone wind tube, and an air outlet cone wind tube docked with the straight wind tube and having an increased cross-sectional area along the wind outlet direction, an impeller is installed in the straight wind tube, and the rotating shaft of the impeller is connected to a generator arranged outside the wind box through a transmission shaft;

[0006] The thermal energy storage system includes an energy storage water tank and a smoke exhaust pipe. Water is stored in the energy storage water tank. The smoke exhaust pipe runs through the interior of the energy storage water tank and is immersed in water. One end of the smoke exhaust pipe is connected to the air outlet cone duct. A heat conductive sheet is connected to the smoke exhaust pipe.

[0007] Furthermore, the impeller includes a rotating shaft and blades mounted on the rotating shaft, and the windward surface of the blades is a twisted curved surface.

[0008] Further, the blades include relatively arranged fixed blades and relatively arranged adjustable blades, the fixed blades are fixedly connected to the rotating shaft, and the adjustable blades are connected to the rotating shaft through a four-bar linkage, the four-bar linkage includes a first link and a second link respectively hinged to the adjustable blades, the other end of the first link is hinged to the third link, the other end of the third link is hinged to the end of the rotating shaft, a fourth link is hinged between the third link and the second link, and the second link is hinged to a support rod fixed on the end of the rotating shaft.

[0009] Furthermore, it also includes an electric cylinder and a wind speed sensor, one end of the electric cylinder is hinged to the end of the rotating shaft, and the other end is hinged to the second connecting rod. The wind speed sensor is installed in the air inlet cone wind tube or the flue, and the electric cylinder operates according to the wind speed sensor signal.

[0010] Furthermore, the blades are made of ABS material.

[0011] Furthermore, a plurality of guide plates arranged at intervals are provided in the air inlet cone air duct.

[0012] Furthermore, it also includes a speed increaser, wherein the rotating shaft of the impeller is connected to an input end of the speed increaser arranged outside the wind box through a transmission shaft, and an output end of the speed increaser is connected to the generator.

[0013] Furthermore, the air outlet end of the smoke exhaust pipe is connected to a smoke exhaust hood, and an electrostatic plate is arranged in the smoke exhaust hood.

[0014] Furthermore, the thermal energy storage system also includes a solar collector installed on the top of the energy storage water tank, the solar collector is connected to the energy storage water tank through a circulation pipeline, and a water pump is arranged on the circulation pipeline.

[0015] The utility model is a device for energy recovery and reuse of smoke from large-scale restaurants. It is installed at the air outlet of the ventilation duct of the restaurant. It first uses the impeller movement of the smoke power generation device to generate electricity, which is stored in a battery and finally connected to the power grid for public use by the restaurant and the community. At the same time, a set of energy storage water tanks is installed on the roof. The smoke that has passed through the smoke power generation device flows through the heat transfer pipe of the energy storage water tank to transfer heat to water, and the water is heated for people's daily use. When the heat of the smoke is not enough, a solar collector is added as an auxiliary water heating system. This system not only solves the smoke pollution of restaurant oil smoke, but also solves the problem of comprehensive utilization of restaurant oil smoke energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] Figure 2 It is a structural schematic diagram of the smoke power generation device of the utility model.

[0018] Figure 3 It is a cross-sectional schematic diagram of the smoke power generation device of the utility model.

[0019] Figure 4 It is a schematic diagram of the impeller blades of the utility model in the unfolded state.

[0020] Figure 5 It is a schematic diagram of the impeller blades of the utility model in a folded state.

[0021] Figure 6 yes Figure 4 A partial enlarged view of point A in the middle.

[0022] Figure 7 It is a structural schematic diagram of the smoke exhaust hood of the utility model. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively and carefully below in conjunction with the accompanying drawings and preferred embodiments of the specification, but the protection scope of the present invention is not limited to the following specific embodiments.

[0024] like Figure 1 As shown, the energy recovery and reuse device for large-scale restaurant smoke of this embodiment includes a smoke power generation device 2 and a thermal energy storage system 3.

[0025] See also Figure 1 , Figure 2 , Figure 3 The flue gas power generation device 2 of this embodiment includes a wind box 210, which includes an air inlet cone duct 211 that is connected to the flue 1 and has a shrinking cross-sectional area along the wind outlet direction, a straight duct 212 that is connected to the air inlet cone duct 211, and an air outlet cone duct 213 that is connected to the straight duct 212 and has an increased cross-sectional area along the wind outlet direction. In this embodiment, the wind box 210 adopts a plurality of variable cross-section designs, which can increase the speed of the flue gas flow. In this embodiment, a plurality of guide plates 220 arranged at intervals are provided in the air inlet cone duct 211, and the guide plates 220 are used to guide the flue gas, and a laminar flow is formed after the guide, thereby changing the turbulent flow phenomenon of the flue gas.

[0026] See also Figure 2 , Figure 3In this embodiment, an impeller 250 is installed in the straight wind tube 212, and the rotating shaft 251 of the impeller 250 is connected to the input end of the speed increaser 230 arranged outside the wind box 210 through a transmission shaft, and the output end of the speed increaser 230 is connected to the generator 240. In this embodiment, the speed increaser 230 is driven by the impeller 250 to move, and then the generator 240 is driven to work. The speed increase ratio of the speed increaser 230 is a variable mechanism, and the adjustment range is from 1:10 to 1:50; the speed increase ratio is changed according to the speed of the generator. When the flue wind speed is less than 3m / s, the speed increase mechanism quickly cuts into a large speed increase ratio, and when the wind speed is greater than 3m / s, the speed increase mechanism cuts into a small speed increase ratio to ensure that the generator runs at the rated speed. The electricity generated by the generator is first stored in the battery, and after the battery is fully loaded, it is finally connected to the power grid for use by the owners of the community.

[0027] See also Figure 4-Figure 6 In this embodiment, the impeller 250 includes a rotating shaft 251 and a blade mounted on the rotating shaft 251. Considering the starting wind speed of the blade, the blade adopts a large petal-shaped design, and the windward surface of the blade is a twisted curved surface with an arc of up to 115 degrees. At the same time, in order to ensure smooth ventilation of the flue, the windward surface of the blade adopts a taper design with a taper of 11 degrees. Considering the strength of the blade, the entire blade is made of ABS material. ABS has excellent comprehensive physical and mechanical properties, good low-temperature impact resistance, dimensional stability and wear resistance, and good finished product processing and mechanical processing.

[0028] The blades include fixed blades 252 and adjustable blades 253 arranged opposite to each other. The fixed blades 252 are fixedly connected to the rotating shaft 251. The adjustable blades 253 are connected to the rotating shaft 251 through a four-bar linkage. The four-bar linkage includes a first link 255 and a second link 254 respectively hinged to the adjustable blades 253. The other end of the first link 255 is hinged to the third link 256. The other end of the third link 256 is hinged to the end of the rotating shaft 251. A fourth link 257 is hinged between the third link 256 and the second link 254. The second link 254 is hinged to a support rod 258 fixed to the end of the rotating shaft 251. When the wind speed is too high, two of the adjustable blades 253 are completely thrown away by centrifugal force, and all four blades work; on the contrary, at low speed, two of the adjustable blades 253 slowly fall back to the original position.

[0029] In this embodiment, in order to facilitate the control of the adjustable blades 253, an electric cylinder 259 and a wind speed sensor are also included. One end of the electric cylinder 259 is hinged to the end of the rotating shaft 251, and the other end is hinged to the second connecting rod 254. The wind speed sensor is installed in the air inlet cone duct 211 or the flue 1, and the electric cylinder 259 is actuated according to the wind speed sensor signal.

[0030] like Figure 1As shown, in this embodiment, the thermal energy storage system 3 includes an energy storage water tank 301 and a smoke exhaust pipe 302. Water is stored in the energy storage water tank 301. The smoke exhaust pipe 302 runs through the interior of the energy storage water tank 301 and is immersed in water. One end of the smoke exhaust pipe 302 is connected to the air outlet cone duct 213, and a heat conductive sheet 303 is connected to the smoke exhaust pipe 302. The heat in the flue gas is transferred to the water stored in the energy storage water tank 301 through the heat conductive sheet 303 on the smoke exhaust pipe 302, and the water is heated, and the hot water can be used for daily life. The thermal energy storage system 3 also includes a solar collector 304 installed on the top of the energy storage water tank 301. The solar collector 304 is connected to the energy storage water tank 301 through a circulation pipeline, and a water pump is provided on the circulation pipeline. When the flue gas heat is insufficient, the solar collector 304 serves as an auxiliary water heating system to assist the flue gas in heating the water.

[0031] like Figure 1 , Figure 7 As shown, the air outlet end of the smoke exhaust pipe 302 is connected to a smoke exhaust hood 4, and an electrostatic plate 401 is arranged in the smoke exhaust hood 4. The electrostatic plate 401 can absorb harmful smoke and residual dust in the oil smoke, thereby reducing the emission of polluted gases.

[0032] The circuit control part of this system includes the generator speed increaser control circuit, the blade adjustment control circuit, the battery storage control circuit, etc., which are automatically controlled by the PLC control program.

[0033] With the help of the teachings in the foregoing description and the related drawings, a person skilled in the art will be able to think of many modifications and other embodiments of the present invention. Therefore, it is to be understood that the present invention is not limited to the specific embodiments disclosed, and modifications and other embodiments are considered to be included within the scope of the appended claims. Although specific terms are used herein, they are used only in a general and descriptive sense and not for limitation.

Claims

1. An energy recovery and reuse device for large-scale restaurant smoke, characterized by: It comprises a flue gas power generation device (2) and a thermal energy storage system (3); The flue gas power generation device (2) comprises a wind box (210), the wind box (210) comprising an air inlet cone wind tube (211) connected to the flue (1) and having a reduced cross-sectional area in the air outlet direction, a straight wind tube (212) connected to the air inlet cone wind tube (211), and an air outlet cone wind tube (213) connected to the straight wind tube (212) and having an increased cross-sectional area in the air outlet direction, an impeller (250) being installed in the straight wind tube (212), and a rotating shaft (251) of the impeller (250) being connected to a generator (240) arranged outside the wind box (210) via a transmission shaft; The thermal energy storage system (3) comprises an energy storage water tank (301) and a smoke exhaust pipe (302); water is stored in the energy storage water tank (301); the smoke exhaust pipe (302) penetrates the interior of the energy storage water tank (301) and is immersed in water; one end of the smoke exhaust pipe (302) is in communication with an air outlet cone duct (213); and a heat conducting sheet (303) is connected to the smoke exhaust pipe (302).

2. The device for energy recovery and reuse of smoke from large-scale restaurants as claimed in claim 1, characterized in that: The impeller (250) comprises a rotating shaft (251) and blades mounted on the rotating shaft (251), and the windward surface of the blades is a twisted curved surface.

3. The device for energy recovery and reuse of large-scale restaurant smoke according to claim 2, characterized in that: The blades include fixed blades (252) and adjustable blades (253) that are arranged opposite to each other. The fixed blades (252) are fixedly connected to the rotating shaft (251). The adjustable blades (253) are connected to the rotating shaft (251) via a four-bar linkage. The four-bar linkage includes a first link (255) and a second link (254) that are respectively hinged to the adjustable blades (253). The other end of the first link (255) is hinged to a third link (256). The other end of the third link (256) is hinged to an end of the rotating shaft (251). A fourth link (257) is hinged between the third link (256) and the second link (254). The second link (254) is hinged to a support rod (258) fixed to the end of the rotating shaft (251).

4. The device for energy recovery and reuse of smoke from large-scale restaurants as claimed in claim 3, characterized in that: It also includes an electric cylinder (259) and a wind speed sensor, wherein one end of the electric cylinder (259) is hinged to the end of the rotating shaft (251), and the other end is hinged to the second connecting rod (254), the wind speed sensor is installed in the air inlet cone wind tube (211) or the flue (1), and the electric cylinder (259) operates according to a signal from the wind speed sensor.

5. The device for energy recovery and reuse of smoke from large-scale restaurants as claimed in claim 2, characterized in that: The blades are made of ABS material.

6. The device for energy recovery and reuse of smoke from large-scale restaurants as claimed in claim 1, characterized in that: A plurality of guide plates (220) arranged at intervals are provided in the air inlet cone air cylinder (211).

7. The device for energy recovery and reuse of smoke from large-scale restaurants as claimed in claim 1, characterized in that: It also includes a speed increaser (230), wherein the rotating shaft (251) of the impeller (250) is connected to an input end of the speed increaser (230) disposed outside the wind box (210) via a transmission shaft, and an output end of the speed increaser (230) is connected to the generator (240).

8. The device for energy recovery and reuse of smoke from large-scale restaurants as claimed in claim 1, characterized in that: The air outlet end of the smoke exhaust pipe (302) is connected to a smoke exhaust hood (4), and an electrostatic plate (401) is arranged inside the smoke exhaust hood (4).

9. The device for energy recovery and reuse of smoke from large-scale restaurants as claimed in claim 1, characterized in that: The thermal energy storage system (3) further comprises a solar thermal collector (304) installed on the top of the energy storage water tank (301); the solar thermal collector (304) is connected to the energy storage water tank (301) via a circulation pipeline, and a water pump is arranged on the circulation pipeline.

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